2. "Set of Four Treasures" is a masterpiece of another new hotel in Kaifeng, which has been circulated for a hundred years. It is named because it combines the four flavors of duck, chicken, pigeon and quail, and the four birds are layered and intact. It was improved by Chen Yongxiang, an official chef in Kaifeng in the late Qing Dynasty, on the basis of the traditional famous dish "Set of Three Rings". This dish is original, mellow, tender and not greasy, and has a variety of flavors. Founded in the late Qing Dynasty, it was created by Chen Yongxiang, a famous chef in Kaifeng, based on years of cooking experience. As the name implies, "four treasures" is to cook four excellent ingredients together.